GNEE Group is a leading professional manufacturer and global supplier of high-quality NM400, NM450, NM500 wear resistant carbon steel plate, specializing in quenched and tempered wear-resistant steel solutions for heavy-duty industrial applications.
With years of production experience, advanced manufacturing facilities, strict quality control systems, and a complete supply chain covering production, processing, packaging and shipping, we deliver durable, cost-effective wear plates that meet international standards and customer-specific requirements.
Whether you need standard sizes or customized cutting, bending, and processing services, we have the expertise and capacity to fulfill bulk and small-batch orders with fast lead times.
GNEE Advanced NM Wear Plate Production Workshop
What Are NM400, NM450 & NM500 Wear Resistant Carbon Steel Plate?
NM400, NM450 and NM500 wear resistant carbon steel plate are premium quenched and tempered (Q&T) abrasion-resistant steel grades designed to withstand severe wear, impact and friction in heavy industrial environments.
The "NM" prefix stands for "Nai Mo" (wear-resistant in Chinese), while the numerical value represents the nominal Brinell Hardness (HBW) of the steel plate. These three grades are the most widely used wear-resistant steel options on the global market, offering a balanced mix of hardness, toughness, weldability and workability to suit different wear intensity scenarios.
Unlike ordinary carbon steel, these wear-resistant plates undergo specialized heat treatment to form a dense, hard surface layer that resists scratching, grinding and material loss, significantly extending the service life of equipment and reducing maintenance costs. GNEE's NM series wear plates are produced in compliance with GB national standards and international quality norms, ensuring consistent performance and reliable quality for every batch.
GNEE NM Series Wear Resistant Steel Plate Finished Products
Key Core Traits of NM Series Wear Resistant Steel Plate
- High hardness and superior wear resistance to handle heavy abrasion
- Good impact toughness to prevent cracking under heavy load
- Moderate weldability and machinability for easy fabrication
- Wide thickness and size range to fit diverse project needs
- Cost-efficient alternative to expensive alloy wear materials
NM400 vs NM450 vs NM500 Wear Resistant Carbon Steel Plate: Technical Parameter Comparison
To help you make an informed purchasing decision, we've compiled a detailed technical parameter table highlighting the chemical composition, mechanical properties and hardness differences between NM400, NM450 and NM500 wear resistant carbon steel plate. This data is based on strict factory testing and quality verification, reflecting the real performance of GNEE's premium wear plates.
|
Parameter |
NM400 Wear Resistant Steel Plate |
NM450 Wear Resistant Steel Plate |
NM500 Wear Resistant Steel Plate |
|---|---|---|---|
|
Nominal Hardness (HBW) |
370-430 HBW |
420-480 HBW |
≥470 HBW |
|
Tensile Strength (MPa) |
≥1200 MPa |
≥1250 MPa |
≥1250 MPa |
|
Elongation (%) |
≥10% |
≥7% |
≥7% |
|
Impact Test (-20℃, J) |
≥24 J |
≥24 J |
≥24 J |
|
Carbon Content (Max) |
≤0.30% |
≤0.35% |
≤0.38% |
|
Manganese Content (Max) |
≤1.60% |
≤1.70% |
≤1.70% |
|
Wear Resistance Level |
Medium-High |
High |
Ultra-High |
|
Typical Thickness Range |
6mm-100mm |
6mm-100mm |
6mm-100mm |
In-Depth Performance Comparison: NM400 vs NM450 vs NM500 Wear Resistant Carbon Steel Plate
✅️NM400 Wear Resistant Carbon Steel Plate: Balanced Toughness & Wear Resistance
NM400 is the most versatile grade in the NM wear-resistant steel series, offering a perfect balance between hardness, toughness and processability. With a nominal hardness of 370-430 HBW, it delivers reliable medium-high wear resistance while maintaining excellent impact resistance, making it ideal for applications with moderate abrasion and occasional impact loads. This grade is easier to weld, cut and machine compared to higher-hardness NM450 and NM500, reducing fabrication difficulty and processing costs.
GNEE's NM400 wear plate is a top choice for customers seeking a cost-effective wear solution without compromising on durability. It performs exceptionally well in general heavy-duty scenarios where equipment faces consistent wear but not extreme friction, ensuring long service life and stable operation.
NM400 Chemical Component
| Element | C | Si | Mn | P | S | Cr | Mo | Ni | B | CEV | |
| Grade | NM400 | ≤0.25 | ≤0.70 | ≤1.60 | ≤0.025 | ≤0.010 | ≤1.4 | ≤0.50 | ≤1.00 | ≤0.004 |
NM400 Mechanical Properties
| Steel Grade | Y.S (MPa) | T.S (MPa) | Elongation A5(%) | Impact Test | Hardness | |
| min | min | min | (°C) | AKV J(min) | HBW | |
| NM400 | 1000 | 1250 | 10 | -20 | 30 | 360-440 |
Is NM400 steel good?
NM400 is a type of wear-resistant steel plate. "NM" stands for the Chinese pinyin initials of "nài," ( meaning wear-resistant) and "mó," ( meaning abrasion). The number 400 refers to the Brinell hardness (HB) value, which, in this context, generally ranges from 360 to 420 for domestic NM400.
Is NM400 bullet proof?
No, although NM400 has high wear resistance and hardness, it does not have sufficient ability to withstand and prevent penetration by bullets. However, NM500 has bulletproof capabilities.
What is the HRC of nm400 steel?
The surface Brinell hardness of NM400 typically ranges from 360 to 420 HBW.
NM400 vs AR400
The surface hardness is different, but other chemical compositions are comparable. NM400 hardness: 360-420 HBW, AR400 hardness: 360-440 HBW. NM400 is more economical and affordable than AR400.
✅️NM450 Wear Resistant Carbon Steel Plate: Upgraded High-Wear Performance
As the middle-grade option, NM450 wear resistant carbon steel plate features enhanced hardness (420-480 HBW) and wear resistance compared to NM400, while retaining decent toughness and weldability. It is designed for applications with high-intensity abrasion, bridging the gap between the standard NM400 and ultra-hard NM500. This grade offers better wear life than NM400 without the extreme brittleness risk of higher-hardness steels, making it a popular upgrade for industries facing heavier friction loads.
NM450 is the go-to choice for customers who need more wear resistance than NM400 but still require manageable fabrication and processing. It strikes an optimal balance between performance and practicality, delivering superior durability in demanding working conditions.
Chemical Composition(%)
| Steel Grade | C | Si | Mn | P | S | Cr | Ni | Mo | B |
| NM450 | 0.26 max | 0.70 max | 1.60 max | 0.025 max | 0.015 max | 1.50 max | 1.00 max | 0.50 max | 0.004 max |
Mechanical Properties
| Steel Grade | Y.S (MPa) | T.S (MPa) | Elongation A5(%) | Impact Test | Hardness | |
| min | min | min | (°C) | AKV J(min) | HBW | |
| NM450 | 1250 | 1500 | 10 | -20 | 30 | 410-490 |
Is NM450 steel good?
NM450 steel is a high-strength, wear-resistant steel plate with an average Brinell hardness of 450 HBW. Its mechanical properties are 3 to 5 times those of ordinary low-alloy steel plates, with a yield strength above 950 MPa and tensile strength around 1180 MPa.
NM450 steel's excellent wear resistance and high hardness (430-470 HB) make it ideal for use in mining, metallurgy, construction, and machinery manufacturing. It is commonly used for wear plates, liners, and conveyor belts, significantly extending the service life of equipment.
The steel also has good cold bending and processing performance, making it versatile for various applications. Despite its high cost, its durability and economic benefits make NM450 a preferred choice in many industrial field
What is the difference between NM450 and Hardox 450?
NM450 is a Chinese wear-resistant steel grade, while Hardox 450 is produced by the Swedish company SSAB. Both steel grades have almost identical chemical compositions and mechanical properties, but they adhere to different standards. NM450 is considered more cost-effective compared to Hardox 450.
What is the hardness of NM450?
The Brinell hardness (HB) value of NM450 ranges from 420 to 480.
What is NM400 steel?
NM400 is a high-strength wear-resistant steel plate with mechanical properties 3 to 5 times those of ordinary low-alloy steel. It features a surface hardness of 360 to 450 HB and is widely used in engineering, mining, coal mining, environmental, and metallurgical machinery. With a high carbon content (4-5%) and chromium content (25-30%), its Cr7C3 carbides volume fraction exceeds 50%, resulting in a macro hardness of HRC 56 to 62
✅️NM500 Wear Resistant Carbon Steel Plate: Ultra-High Wear Resistance for Extreme Conditions
NM500 is the top-tier grade in the standard NM series, boasting ultra-high hardness (≥470 HBW) and maximum wear resistance to withstand the most severe abrasive environments. Engineered for extreme wear scenarios with minimal impact, this plate provides unparalleled protection against grinding, scratching and material loss, drastically extending equipment lifespan in heavy-duty operations. While it has slightly lower toughness than NM400 and NM450, proper fabrication and installation ensure it performs reliably in high-wear, low-impact applications.
GNEE's NM500 wear resistant carbon steel plate is manufactured with precision heat treatment to guarantee consistent hardness and quality across the entire plate surface, making it the ultimate solution for the harshest industrial wear conditions.
GB/T24186 NM500 abrasion resistant steel plate chemical composition
| Brand | C | Si | Mn | P | S | Cr | Mo | Ni | B | CEV |
| NM500 | ≤0.38 | ≤0.70 | ≤1.70 | ≤0.020 | ≤0.010 | ≤1.20 | ≤0.65 | ≤1.0 | Bt: 0.005-0.06 | 0.65 |
GB/T24186 NM500 abrasion resistant steel plate mechanical properties
| Brand | Thickness mm | Tensile Test MPa | Hardness | |||||||
| YS Rel MPa | TS Rm MPa | Elongation % | ||||||||
| NM500 | 10-50 | --- | ---- | ≥24 | 480-525 | |||||
What is NM500 steel?
NM500 steel is a high strength wear resistant steel plate designed to provide excellent mechanical properties and superior wear resistance. It is often used in industries that require high impact and wear resistance, such as mining, construction and industrial machinery, and is more cost-effective than bulletproof steel AR500.
what is NM500 steel equivalent to?
NM500 steel is equivalent to other wear-resistant steels such as Hardox 500 produced by SSAB of Sweden, EH500 from Japan, and AR500 from the United States, all of which have similar mechanical properties and are used in similar applications.
What is the hardness of NM500?
The hardness of NM500 steel typically ranges from 470 to 530 HBW.
what are the properties of NM500 material?
High Wear Resistance: NM500 steel offers superior wear resistance, making it ideal for applications that involve heavy abrasion.
High Strength: It has a high tensile strength, contributing to its durability and ability to withstand mechanical stress.
Good Toughness: Despite its hardness, NM500 maintains good toughness, allowing it to absorb impacts without cracking.
Good Weldability and Machinability: NM500 can be welded and machined using appropriate techniques, although preheating and post-weld heat treatment may be required to prevent cracking.
Recommended Applications for NM400, NM450 & NM500 Wear Resistant Carbon Steel Plate
Selecting the right wear plate grade depends on your specific application, wear intensity and operating conditions. Below is a detailed breakdown of the most suitable industries and equipment for each NM400, NM450, NM500 wear resistant carbon steel plate to help you match the perfect product to your needs.
🔥Best Uses for NM400 Wear Resistant Steel Plate
- Mining equipment: chutes, hoppers, conveyor liners
- Construction machinery: excavator buckets, loader blades
- Agricultural equipment: harvester parts, tillage tools
- Cement and concrete mixing equipment
- General industrial wear liners and protective plates
In these applications, NM400 wear-resistant plates serve as wear-resistant components. They can withstand harsh working environments and heavy loads, ensuring the long-term stable operation of the equipment. Due to its high cost-performance ratio, NM400 is often used as an alternative to Hardox 400 wear plates.
🔥Best Uses for NM450 Wear Resistant Steel Plate
- Mining crushers, screens and feeder components
- Dump truck beds, tipper bodies and hauling equipment
- Port and material handling equipment liners
- Steel mill and metallurgical wear parts
- High-wear construction machinery attachments
In these applications, NM450 wear-resistant plates serve as wear-resistant components. They can withstand harsh working environments and heavy loads, ensuring the long-term stable operation of the equipment. Due to its high cost-performance ratio, NM450 is often used as an alternative to Hardox 450 wear plates.
🔥Best Uses for NM500 Wear Resistant Steel Plate
- Extreme mining: ore crushers, grinding mill liners
- Bulk material handling: high-abrasion chutes and hoppers
- Quarry and aggregate processing equipment
- Coal mining and transportation equipment
- Heavy-duty wear plates for severe friction environments
In these applications, NM500 wear-resistant plates serve as wear-resistant components. They can withstand harsh working environments and heavy loads, ensuring the long-term stable operation of the equipment. Due to its high cost-performance ratio, NM500 is often used as an alternative to Hardox 450 wear plates.
Why Choose GNEE's NM400, NM450 & NM500 Wear Resistant Carbon Steel Plate?
As a professional wear-resistant steel manufacturer, GNEE Group stands out from other suppliers with our comprehensive advantages, ensuring you get high-quality products, competitive prices and reliable service for your NM400, NM450, NM500 wear resistant carbon steel plate orders.
- Factory Direct Supply: Own production base and advanced rolling lines, eliminating middlemen and offering factory-direct pricing
- Strict Quality Control: Full inspection from raw material to finished product, with hardness testing, mechanical property testing and dimensional inspection
- Customization Services: Support cutting, bending, drilling, painting and other processing services per customer drawings
- Fast Delivery: Large stock of standard sizes, with short lead times for bulk customized orders
- Global Shipping: Professional packaging and logistics team, supporting sea, land and air shipping to worldwide destinations
- Professional Technical Support: Experienced engineers to help you select the right grade and optimize your wear solution
Conclusion: Choose the Right NM Wear Plate & Contact GNEE for a Quote
When selecting between NM400, NM450 and NM500 wear resistant carbon steel plate, always prioritize your application's wear intensity, impact load and fabrication needs: NM400 for balanced versatility, NM450 for upgraded high-wear performance, and NM500 for extreme abrasive conditions. GNEE Group is your trusted one-stop supplier for premium, durable wear-resistant steel plates, with the expertise, capacity and service to meet all your project requirements.
Don't let excessive wear shorten your equipment lifespan or inflate maintenance costs. Contact GNEE today to get a free quote, request product samples, consult with our technical team, or place your bulk order for NM400, NM450 and NM500 wear resistant carbon steel plate.
We are ready to provide tailored wear solutions and competitive factory prices to boost your project efficiency and reduce costs!
